Measuring Ampere Range: DC 1-30A Meter Face Size(): 6.3 x 5.5 x 1cm / 2.5 Inch x 2.2 Inch x 0.39 Inch (L*W*T) Product Name: Analog Amperemeter Thread Size: 0.37 x 0.83cm / 0.15 Inch x 0.33 Inch (D*L); Overall Depth: 5.77cm / 2.27 Inch, Manufacturer: Akfldms